I've tried using a couple different chargers, but none seem to charge my S7 as fast as they should. It seems like they are being limited to 500ma somehow. I made a usb cable using an old micro usb, cut the end off, and soldered on a adaptaplug extension and used the adaptaplug "G" plug. So basically, I can charge from any usb based source. I'm using Battery Info Widget, which shows estimated to to full charge. For instance, if the S7 is about 75% and I plug it in using the stock 2Amp adapter, the widget shows about 30 minutes to full charge. Now, if I plug into a different adapter with a usb port for charging, the widget shows 1-2 hours to full charge. The percentage charge also goes up correspondingly slower. I've tried a generic usb car adapter (~500 ma), a usb wall plug (~800ma), Griffin dual 1amp usb car adapter, scosche usb ipad wall adapter (2.1amp), scosche usb ipad car adapter (2.1amp), iGo usb wall adapter (~800ma). With the Griffin and Scocshe adapters I used a portable hard drive cord to plug into both ports. That should have given me at least 2amps being supplied to the S7. However, it still charged as if it were only using about 500ma. Anyone else having similar issues using non-oem chargers?